With 100% of the vote counted, Brazil's electoral court announced that the soon to be 81-year-old Lula held an unassailable lead of nearly 4.4 million votes over opponent Flávio Bolsonaro.

Luiz Inácio Lula da Silva, the leftist incumbent, and Flávio Bolsonaro, the right-wing challenger, face off in a narrow race that could redefine the future of Latin America.

© Adriano Machado/Reuters

Flávio Bolsonaro, the son of the former president who was jailed over a coup plot, could be on the cusp of winning Brazil’s presidency.

© Silvio Avila/Agence France-Presse — Getty Images

Brazil’s President Luiz Inácio Lula da Silva, a leftist, staged a remarkable comeback on Sunday, winning re-election and stopping a right-wing wave.

© Victor Moriyama for The New York Times

This weekend, voters in Brazil head to the polls in a high-stakes presidential runoff that could reshape that country's political future. Will Brazil join a rightward shift across parts of the Americas, or stick with its left-wing leadership? Voting is compulsory for most adults, and the race has deepened political divisions across the country. Stephanie Sy reports.